Our goal is to have a neutral place for game reviews. Much of what is out there is low quality, irrelevant, or paid marketing. Most of the major review sites have little interest in reviewing niche titles and even less interest in giving bad or critical reviews.
So what is a good review? Simply your honest assessment of a game. But be aware of your audience. If you’re reviewing a John Tiller game don’t critique the audio or poor UI. It’s kind of expected. Though you can absolutely point it out that it can be an issue. Highlight what you enjoy, what you don’t, and whether you felt it was worth your money. Don’t be the guy who gives a bad review because your potato PC can’t run it.
Kotaku has a good article about perspective. We are both consumers and critics. But come at it with an eye on the people who develop these things. Unless it is total shovelware someone probably spent an immense amount of time on the game. Giving criticism that is constructive and useful will do far more than a “It sucks.”
BoardGameGeek has some really great reviews. Above is an example of a niche review for a niche audience. That game won’t appeal to the mass of board gamers. The review does a great job of laying out what he likes about it to someone versed in the terminology.
Destructoid has a review of the new Half Life that is also niche, it’s only VR. They didn’t give it 3/10 because it’s VR exclusive. The review is context sensitive for the technology and the niche.
If you disagree with a review post it below the OP and let them know your thoughts. I wrote a critical review of Rule the Waves 2 and the publisher reached out to clarify a few things. I acknowledged the issues but still gave it a critical review.